Control-Disk™ rotary valve offers excellent throttling performance. An equal percentage flow characteristic provides an improved throttling range comparable to that of a segmented ball valve. This improved capability allows you to control closer to the target set point, regardless of process disturbances, which results in a reduction in process variability. 

View an animation video that explains the control range advantages offered by the Control-Disk design.

Watch a video that compares the installed performance of the Fisher Control-Disk valve to the Jamesbury Wafer Sphere 830.